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5685170036
'option_knockout' to 'struct plotter_table' which basically is a request
from that plotter backend for the content redraw routine to get called in
such a way that overlapping render areas are avoided as much as possible.
It is up to the content redraw code to actually implement this
option if it is reasonably profitable. This was and is currently done
explicitly by the html content redraw code. On top of that the riscos
plotter code was installing the knockout plotter itself for all content
types except plaintext and SVG and this is no longer being done in this
patch.
In more detail:
- desktop/plotters.h: added struct plotter_table::option_knockout
- render/html_redraw.c(html_redraw): if the plotter backend wants the
knockout calling behaviour, install the knockout plotter which will then
call the real backend. Also check on the return values of clg and clip
plotter calls.
- Plotter backend changes:
-> no longer plotting in knockout mode:
- gtk/gtk_print.c: Also removed a 2nd instance of
"struct plotter_table plot".
- riscos/save_draw.c
- riscos/print.c: Also the path plotter function pointer wasn't
filled in and this is now fixed.
- pdf/pdf_plotters.c: Removed the flush function as this is
optional and we only had a dummy implementation there.
-> remaining to request knockout mode if it makes sense based on the
content type:
- gtk/gtk_plotters.c
- riscos/plotters.c
- desktop/knockout.c
- riscos/window.c: Removed what's believed an obsolete test on the
content type which determined to additionally install the
knockout plotter in front of the real plotter code.
svn path=/trunk/netsurf/; revision=4823
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/*
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* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* Target independent plotting (interface).
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*/
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#ifndef _NETSURF_DESKTOP_PLOTTERS_H_
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#define _NETSURF_DESKTOP_PLOTTERS_H_
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#include <stdbool.h>
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#include "css/css.h"
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#include "content/content.h"
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struct bitmap;
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/** Set of target specific plotting functions. */
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struct plotter_table {
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bool (*clg)(colour c);
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bool (*rectangle)(int x0, int y0, int width, int height,
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int line_width, colour c, bool dotted, bool dashed);
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bool (*line)(int x0, int y0, int x1, int y1, int width,
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colour c, bool dotted, bool dashed);
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bool (*polygon)(int *p, unsigned int n, colour fill);
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bool (*fill)(int x0, int y0, int x1, int y1, colour c);
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bool (*clip)(int x0, int y0, int x1, int y1);
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bool (*text)(int x, int y, const struct css_style *style,
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const char *text, size_t length, colour bg, colour c);
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bool (*disc)(int x, int y, int radius, colour c, bool filled);
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bool (*arc)(int x, int y, int radius, int angle1, int angle2,
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colour c);
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bool (*bitmap)(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg,
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struct content *content);
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bool (*bitmap_tile)(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg,
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bool repeat_x, bool repeat_y, struct content *content);
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bool (*group_start)(const char *name); /**< optional, may be NULL */
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bool (*group_end)(void); /**< optional, may be NULL */
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bool (*flush)(void); /**< optional, may be NULL */
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bool (*path)(float *p, unsigned int n, colour fill, float width,
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colour c, float *transform);
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bool option_knockout; /**< when set, avoid areas are replotted more than once. */
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};
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/** Current plotters, must be assigned before use. */
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extern struct plotter_table plot;
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enum path_command {
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PLOTTER_PATH_MOVE,
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PLOTTER_PATH_CLOSE,
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PLOTTER_PATH_LINE,
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PLOTTER_PATH_BEZIER,
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};
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#endif
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